Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7685753 | LED illuminated house number and sign characters An illuminated, shallow weatherproof signage character has individual three dimensional back-lighted/front/side and/or silhouette-lighting, with frosted areas of plastic, with virtually no limitation on the size or number of individual characters, which may be mould... | 03/30/2010 |
| 7600345 | Swing door operating system A door actuating system has a fractional horsepower motor mounted on the door adjacent its free edge, driving a clutch connected to a duplex capstan pulley that is wrapped by two tensioned flexible static lines, for opening/closing movement ‘along the line’. The... | 10/13/2009 |
| 7380561 | Portable, displaceable anchor stand A lightweight, portable post-anchor is readily secured to the ground without the use of tools, and is readily removed for re-use elsewhere, being used with a beach-style umbrella, and/or a table. It can support citronella torches, games nets and signage. The high st... | 06/03/2008 |
| 7377064 | Tower banner display system and apparatus A banner is displayed about a tower structure, such as a water tower, by a system that enables ready substitution or replacement of the banner, without the use of high-lift equipment. The fabric banner is segmented, of wind permeable stretchable fabric, and mounted ... | 05/27/2008 |
| 7308727 | Polishing system and tool A rotary tool used with a pneumatic or an electric drill, for polishing truck wheels, adjacent the in-situ nuts, has a chuck mounted on a driving shaft, the chuck including an outer cylindrical housing, a centre housing with a replaceable guide bushing, and an annul... | 12/18/2007 |
| 7264083 | Framing system scaffold hanger A suspended scaffold, which hangs from the wall plate within a frame structure, has two hangar brackets attached to the wall plate. Each bracket has an outer retainer bar for insertion between the wall plate outer face and an adjoining sheathing panel. A cooperating... | 09/04/2007 |
| 6889391 | Safety visor An elastic visor for detachable mounting on headwear is of sheet neoprene having a reinforcing layer of nylon, with a crown aperture that is stretched around, and grips the surface of a headwear to which it is mounted. The neoprene, of about five millimeter thicknes... | 05/10/2005 |
| 6699352 | Decorative and protective system for wares A range of damage and wear-susceptible articles, including such as drinkware and flatware, and heat-susceptible articles, have a tough, protective plastic coating applied in sealing, protective relation with a surface portion. The protective coating may h... | 03/02/2004 |
| 6494435 | Spring-loaded safety winch for load restraint system In a load tie-down system that incorporates a wind-down winch for securing and tensioning a hold-down member, the improvement consists of incorporating a tensioning spring that maintains a resilient loading upon the drum of the winch, such that in the eve... | 12/17/2002 |
| 6481565 | Conveyor system with pneumatic transfer A conveyor vacuum system for transporting objects while applying vacuum to their undersides has a series of self-contained suction transfer blocks, each with a sensor low pressure air jet for detecting the presence of an article upon the conveyor belt, wh... | 11/19/2002 |
| 6455155 | True-section extruded plastic cutter filament system An improved cutting filament for use in a rotary trimmer is an extruded resin, being subject to vertical extrusion to sustain true-section profile, and to structural orientation to enhance the strength and toughness of the material. One embodiment, a poly... | 09/24/2002 |
| 6453590 | Portable emblem Lightweight advertising emblems that are readily knocked down into compact packages are mounted upon light standards or upon free-standing masts which use bases that incorporate local ballasting agents such as paving stones, gravel, sand, stones or water.... | 09/24/2002 |
| 6346315 | House wares and decorative process therefor House wares, including frangible wares, comprising glassware, earthenware including china, and ceramics, the glassware including dishes and vessels such as drinking glasses, are coated with a protective plastic coating, usually including an initial adhesi... | 02/12/2002 |
| 6331578 | Process for preparing interpenetrating polymer networks of controlled morphology The invention relates to a method of making an interpenetrating polymer network (IPN) of at least a first polymer and a second polymer from a first and second component wherein the first component is the first polymer, or a polymerizable reactant selected... | 12/18/2001 |
| 6238762 | Selectively tearable covering sheet A covering sheet for applying to a selected surface in substantially fitted, covering relation consists of a flexible sheet of predetermined size and thickness, having a rectangular grid of lines to provide rectilinear yield lines (lines of weakness) exte... | 05/29/2001 |
| 6223572 | Door lock furniture A door lock for use with a door having a through bore and an intermediate transverse aperture connecting said bore with an edge of the door, into which through bore actuator portions of the lock are inserted, and through which transverse aperture a latch ... | 05/01/2001 |
| 6065721 | Switch clearing system An sir blowing system for use in deeping railroad track switches clear of snow utilizes flexible tubes, preferebly of rubber or plastic, located transversely beneath the main tracks, and connecting with resilient nozzles to direct a high flow of air in th... | 05/23/2000 |
| 6022617 | Decorative non-slip liner or mat The laminated non-slip liner or mat comprises a first laminate layer of nonwoven material having a first surface and a second surface, the second surface having printed thereon a pattern of relatively high friction material; a second laminate layer of mat... | 02/08/2000 |
| 5961137 | Wheel restraint safety system A loose wheel restraint safety system provides bolt-on support brackets in a system for attachment to the chassis or to the body of a vehicle, to which brackets wheel restraint bars are detachably mounted. The brackets of the system are located adjacent t... | 10/05/1999 |
| 5921844 | Toy caddy A lightweight slender, elongated toy caddy, comprising a central shaft, having a substantially axially extending removable handle located at its upper end; replaceable ground-contact means at the shaft lower end comprise a wheel, or dual wheels or a ski. ... | 07/13/1999 |
| 5921229 | Hand-portable, light-weight cooker/heating device An all-metal, hand-portable, light-weight heating device serves as a self-contained oven, as a stove, or as a space heater. The box-like device comprises hollow sheet-metal back, side and top walls and door. A fully enclosed heater chamber beneath the ove... | 07/13/1999 |
| 5795463 | Oil demetalizing process Metals are removed from used, contaminated oils, such as crankcase oils from cars, by a low temperature, batch tank process. The oil is hydrated by adding enough water to prevent premature crystallization of a reagent salt from solution in a succeeding st... | 08/18/1998 |
| 5746255 | Compound hose system A frost-free water supply system drains down to avoid freeze-up during non-pumping periods, its operation being responsive to air pressure within the system. A compound hose used may have an inner hose part co-extruded with the outer hose. The inner hose ... | 05/05/1998 |
| 5713164 | Pool liner installation system The installation of a vinyl liner within an in-ground swimming pool is carried out using a direct drive, over-hung vacuum machine to exhaust air from between the liner and the steel walls and cement bowl within which the liner is installed. The vacuum mac... | 02/03/1998 |
| 5705772 | Multi-service floor outlet A flush-mounted multi-service floor outlet, to provide electrical power and multiple voice/data access jack outlets has a unitary, longitudinally compartmented cylindrical metal housing for location in penetrating relation through a cement floor. The powe... | 01/06/1998 |
| 5664869 | Low voltage potlamp system The installation of reduced diameter potlamps for use with high intensity halogen bulbs is greatly facilitated by using a connector box having the step-down transformer mounted upon one end of the box, and connecting with and spaced from the lamp pot by w... | 09/09/1997 |
| 5584665 | Liquid drainage system with pneumatic sensor In a frost-free water supply system that drains down to avoid freezing, during non-pumping periods, operation of the system is responsive to pressure changes within the system. A pneumatic relay sensitive to changes in one of the fluid pressures operative... | 12/17/1996 |
| 4727604 | Waste stopper arrangement An improved stopper arrangement is provided, for use with a remote stopper actuating mechanism having a mechanical lever system for raising a central post to which the waste stopper is attached. The improved stopper has a central spindle to which is attac... | 03/01/1988 |
| 4235335 | Ribbon Package A simple, inexpensive package for dispensing a ribbon of magnetic tape or other thin non-adhesive material is disclosed. The package includes a roll of ribbon and a pair of annular paperboard sheets which each have a pressure-sensitive adhesive surface. T... | 11/25/1980 |
